That's possible. I think he could have been 6'-2.5" or even 6'-3". But he was less than 6'-4".
Here's Jay next to Brian Shaw. Shaw has very good forearm genetics.

Legendary post from anabolichalo:
“Brian Shaw is one of those insecure fat power farm boys who loves to out angle bodybuilders and pretend he's all muscle and not a mountain of animal lard.
Scrawny frustrated losers (who for some reason associate more with lardoes than ripped jacked mofos; probably because they think the fatties are "natty"), and fat homos will look at this pic and consider it somehow a victory for TEAM FAT but I see it differently
-retired jay cutler laid back not even flexing
-two fat fucks "who dont care about appearance" standing way closer to the camera doing "thumbs up poses", to out angle the bodybuilder
-fat fucks think "we running this shit now, we the best"
-cutler thinking "omg these guys are so fucking fat and delusional lol"